I imagine he has his reasons, but either way it's hard to knock on UO for speed rules. People can swing swords more than once every 1.25s on the fast end, but it's there for a gameplay reason.
If there's a gameplay/balance reason for a change to archery, I imagine it has little to do with real-life physics.
If there's a gameplay/balance reason for a change to archery, I imagine it has little to do with real-life physics.